First Successful Threading of Porcelain

[Trade Journal]

Publication: The Electrical Engineer

New York, NY, United States
vol. 11, no. 144, p. 152

TRADE NOTES AND NOVELTIES

AND MECHANICAL DEPARTMENT.

Pass & Seymour

The above Syracuse firm, manufacturers of china for electrical purposes, write us that they have succeeded in threading porcelain with all the accuracy and in all the variety obtained in metal work. This advance is one of importance to electrical industries.

Keywords:	Pass & Seymour : U-146 : U-146A
Researcher notes:	Pass & Seymour produced wet process porcelain insulators by the casting process. The article undoubtedly refers to U-146 and U-146A. There is only one specimen of U-146 and U-146A in the hobby. There is one specimen of U-146 at the Smithsonian.
Supplemental information:
Researcher:	Elton Gish
Date completed:	December 16, 2004 by: Elton Gish;